P145NCB-12C Johnson Controls Cutout

Overview

The Johnson Controls P145NCB-12C is a lube oil pressure cutout control designed to provide dependable low lube oil pressure protection for pressure-lubricated refrigeration compressors. It measures net oil pressure—the difference between the oil pump pressure and the refrigerant pressure in the crankcase—and shuts down the compressor if the pressure falls below the safe threshold. It features a built-in time delay relay and an integrated alarm circuit.

Features

• Ambient compensated thermal time delay relay minimizes temperature variation effects
• Trip-free manual reset mechanism ensures manual intervention before restarting
• Integrated alarm circuit for remote warning or supervisory activation
• Enclosed pressure-actuated contacts protected against wiring interference
• Universal mounting design interchangeable with most Penn P28 controls

Specifications

• Time Delay: 120 seconds
• Pressure Setting: 9 psi factory set
• Electrical Rating: 120/240 VAC heater circuit
• Pressure Connection: 1/4 inch external flare nut

Applications

• Lube oil cutout protection for hermetic and semi-hermetic refrigeration compressors
• Commercial air-conditioning systems
• Commercial and industrial refrigeration systems